20212021122210 has 48 divisors (see below), whose sum is σ = 53441954167680. Its totient is φ = 5298518530080.

The previous prime is 20212021122169. The next prime is 20212021122211. The reversal of 20212021122210 is 1222112021202.

It is a happy number.

20212021122210 is a `hidden beast` number, since 20 + 212 + 0 + 211 + 2 + 221 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20212021122211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1903198186 + ... + 1903208805.

It is an arithmetic number, because the mean of its divisors is an integer number (1113374045160).

Almost surely, 2^{20212021122210} is an apocalyptic number.

20212021122210 is an abundant number, since it is smaller than the sum of its proper divisors (33229933045470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20212021122210 is a wasteful number, since it uses less digits than its factorization.

20212021122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806407063 (or 3806407060 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20212021122210 its reverse (1222112021202), we get a palindrome (21434133143412).

The spelling of 20212021122210 in words is "twenty trillion, two hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred ten".